Chaff-separator for coffee-mills.



B. NORDIN.

GHAFF SEPARATOR FOR COFFEE MILLS.

APPLICATION FILED APR. 29k 1912.

Patented Feb. 11, 1913.

' Ill/ 77703" UNITED STATES PATENT orrron.

BERNHARD NORDIN, OF BERGLAND, ONTARIO, CANADA.

CHAFF -SEPARATOB FOR COFFEE-MILLS.

Specification of Letters Patent.

Patented Feb. 11, 1913.

Application filed April 29, 1912. Serial No. 693,866.

the mill and for blowing the chaff from it into a chaff drawer.

The invention consists in the combination and arrangement of parts to be'hereinafter fully described in the following specifica r tion, pointed out in the claims and illus-' trated in the accompanying drawing which forms a part of the specification and in I which- Figure 1 is a vertical section of a coffee mill provided with my chafl" separator.

Fi 2 is a horizontal section 'of the same.

ike reference characters indicate corresponding parts throughout the several views. 1 is a coffee mill provided with a coffee chamber 2, crank 3 and grinding shaft 4,

The ground coffee falls from the coffee chamber 2 into the mill and is separated by contactwith a rotary spreader 5 terminally carried by the grinding shaft 4.' The periphery of the spreader 5 is serrated for engagement with the terminal cog of a transmission shaft 6 the lower termination of which is bevel-geared to the shaft of a rotary fan 7. The action of the spreader 5 upon the falling coflee tends to separate it from the chaff, which is much lighter than the coffee, and the air currents produced by the rotary fan blow the chaff to the remote Wall of the-mill where it falls into a chaff drawer 8 which may be removed and emptied when the grinding operation is completed.

What is claimed is 1. In a chaff separator for coffee mills the combination with the grinding shaft of said mill, of a rotary spreader terminally carried thereby, a rotary fan disposed within said mill and transmission mechanism connecting the said s reader and rotary fan.

2. In a cha separator for coffee mills the combination with the grinding shaft of said mill, of a rotary spreader terminally carried thereby, a fan disposed within said mill, transmission mechanism connecting the said spreader and fan and a chaff drawer remova 1y secured within the said mill.

In testimony that I claim the foregoing asmy own I have hereto aflixed my signature in the presence of two subscribing witnesses.

BERNHARD NOR-DIN. Witnesses G. O. KIN-DER, OSCAR PETERSON. 

